What is teaching?

Sri Aurobindo once said that the first principle of teaching is "that nothing can be taught". J.S.Rajput comments on this profound statement:

This statement of Sri Aurobindo condenses a whole lot of theories of education and a new form of pedagogy closer to integral approach to education. It puts learning above teaching. It makes learning a self starting, self propelling process. It redefines the role of teacher as a possessor of information to a facilitator and guide for the learner.

This statement definitely has profound meaning and extreme relevance in today's times.